阅读说明：本技术 一种振荡扑翼波浪能发电装置的实验平台及方法 (Experimental platform and method for oscillating flapping wing wave energy power generation device ) 是由 方子帆 左新球 熊飞 王佳佳 谢雪媛 郑皓元 杨艳丽 朱畅 于 2021-09-14 设计创作，主要内容包括：本发明提供了一种振荡扑翼波浪能发电装置的实验平台及方法,它包括用于对整个装置进行搭载支撑在固定平台；所述固定平台上安装有用于采集能量的振荡扑翼采集机构；所述振荡扑翼采集机构与桥式液压转换系统相连,所述桥式液压转换系统与直流电能变换与储能系统相连。此实验平台实现了在实验室模拟无水池情况下不同等级海况波浪能发电。(The invention provides an experimental platform and a method for an oscillating flapping wing wave energy power generation device, which comprises a fixed platform, a movable platform, a fixed platform and a movable platform, wherein the fixed platform is used for carrying and supporting the whole device; the fixed platform is provided with an oscillating flapping wing collecting mechanism for collecting energy; the oscillating flapping wing collecting mechanism is connected with a bridge type hydraulic conversion system, and the bridge type hydraulic conversion system is connected with a direct current electric energy conversion and energy storage system. The experimental platform realizes the wave energy power generation of different levels under the condition of simulating no water pool in a laboratory.)

1. The utility model provides an experimental platform of oscillating flapping wing wave energy power generation facility which characterized in that: the device comprises a fixed platform, a movable platform, a support and a control device, wherein the fixed platform is used for carrying and supporting the whole device; the fixed platform is provided with an oscillating flapping wing collecting mechanism for collecting energy; the oscillating flapping wing collecting mechanism is connected with a bridge type hydraulic conversion system, and the bridge type hydraulic conversion system is connected with a direct current electric energy conversion and energy storage system.

2. An experimental platform for an oscillating ornithopter wave energy power generation device according to claim 1, characterized in that: the fixed platform comprises a first platform (1), a spring fixed platform (24) is fixedly mounted on one side of the top of the first platform (1), a rocker arm fixed platform (19) is fixed on the top of the spring fixed platform (24), a cylinder barrel fixed platform (17) is fixed on the top of the rocker arm fixed platform (19), and a second platform (33) is arranged on one side of the side edge of the first platform (1) and located on the spring fixed platform (24).

3. An experimental platform for an oscillating ornithopter wave energy power generation device according to claim 1, characterized in that: the spring fixing platform (24), the rocker arm fixing platform (19) and the cylinder barrel fixing platform (17) are sequentially welded and fixed on the columns (18) which are fixedly arranged in a triangular mode, the lower portions of the columns (18) are fixed on the first platform (1), and large rib plates (23) are welded between the spring fixing platform (24) and the columns (18).

4. An experimental platform for an oscillating ornithopter wave energy power generation device according to claim 1, characterized in that: the oscillating flapping wing collecting mechanism comprises a coaxial speed reducing motor (3), the coaxial speed reducing motor (3) is fixedly installed on a first platform (1) of a fixed platform, a cam (4) is installed on an output shaft of the coaxial speed reducing motor (3), the cam (4) and the bottom end of a floater (5) form cam fit, a rocker arm (7) is fixedly installed at the top end of the floater (5) through a floater connecting piece (6), a rocker arm connecting piece (20) is fixed at the other end of the rocker arm (7), the other end of the rocker arm connecting piece (20) is hinged to a first bearing seat (22) through a stepped shaft (21), and the first bearing seat (22) is fixed on the outer side wall of a rocker arm fixed platform (19) of the fixed platform; the top symmetry of rocking arm (7) is fixed with piston rod support piece (9), piston rod support piece (9) are gone up and are linked to each other through round pin axle (10) and terminal articulated with piston rod (11) of cylinder (12), the welding has cylinder connecting piece (13) on cylinder (12), and cylinder connecting piece (13) articulate on second bearing frame (14), and second bearing frame (14) are fixed on bearing base (15), bearing base (15) are fixed on fixed platform's cylinder fixed platform's lateral wall (17).

5. An experimental platform for an oscillating ornithopter wave energy power generation device according to claim 4, wherein: the cam (4) has various sizes and models, and the change of the motion amplitude of the floater (5) and the rocker arm (7) is realized by replacing the cam (4) with different models; the coaxial speed reducing motor (3) is connected with the frequency converter (2) fixed on the first platform (1), and controls the rotating speed to realize the change of the motion period of the cam (4), thereby changing the up-and-down swing period of the floater (5) and the rocker arm (7).

6. An experimental platform for an oscillating ornithopter wave energy power generation device according to claim 4, wherein: the bottom end of the rocker arm (7) is connected with a spring (8), and the other end of the spring (8) is hooked on the outer side wall of a spring fixing platform (24) of the fixing platform; and a small rib plate (16) is fixed between the bearing base (15) and the cylinder barrel fixing platform (17).

7. An experimental platform for an oscillating ornithopter wave energy power generation device according to claim 1, characterized in that: the bridge type hydraulic conversion system consists of a hydraulic cylinder, a one-way valve (25), a safety valve (27), an energy accumulator (29), a pressure gauge (34), a hydraulic motor (30), an oil tank (26) and a hydraulic pipeline; the hydraulic cylinder is connected with the check valve (25) through a hose, the safety valve (27) is installed on a vertical panel, the energy accumulator (29) is installed on an energy accumulator base (28), the energy accumulator base (28) is installed on the vertical panel, the hydraulic motor (30) and the direct current generator (31) are installed on a direct current generator base (32), and the direct current generator base (32) is placed on a second platform (33) of the fixed platform; the vertical panel is vertically fixed on a second platform (33); a safety valve (27), an energy accumulator (29) and a pressure gauge (34) are arranged on a main road of the bridge type hydraulic conversion system, a hydraulic motor (30) is connected to the rear of the main road, an oil outlet of the hydraulic motor (30) is connected with an oil tank (26), and the hydraulic motor (30) rotates to drive a direct current generator (31) to work and generate electricity.

8. An experimental platform for an oscillating ornithopter wave energy power generation device according to claim 7, wherein: the four check valves (25) and the hydraulic pipeline form a bridge type hydraulic circuit to realize hydraulic conversion; the hydraulic cylinder is composed of a piston rod (11) and a cylinder barrel (12).

9. An experimental platform for an oscillating ornithopter wave energy power generation device according to claim 1, characterized in that: the direct current electric energy conversion and energy storage system consists of a direct current generator (31), a filter capacitor (35), a current limiting resistor (36), a voltage regulator tube (37), a light emitting diode (38), a charging controller (39) and a storage battery (40); the electricity generated by the direct current generator (31) passes through a filter capacitor (35), a current limiting resistor (36) and a voltage stabilizing tube (37) to generate required stable voltage and current; the current limiting resistor (36) adopts a slide rheostat, and the resistance value of the current limiting resistor is adjusted to be suitable for the electricity generated by the cams (4) with different sizes and the rotating speed thereof; the direct current electric energy conversion energy storage system is also provided with a light emitting diode (38) and a charging controller (39), and a storage battery (40) is connected behind the charging controller (39).

10. A method of conducting a power generation experiment using the experimental platform of the oscillating ornithopter wave energy power plant of any one of claims 1 to 9, characterised by the steps of:

the method comprises the following steps: according to experimental setting, a cam (4) with a proper size is selected to realize the change of the motion amplitude of a rocker arm (7) floater (5); the change of the motion period of the cam (4) can be realized by adjusting the rotating speed of the coaxial speed reducing motor (3);

step two: starting the coaxial reducing motor (3), controlling the rotating speed of the coaxial reducing motor (3) through the frequency converter (2), rotating the coaxial reducing motor (3) to drive the cam (4) to rotate, and rotating the cam (4) to drive the rocker arm (7) and the floater (5) to swing up and down; when the cam (4) moves from the lowest point to the highest point, the rocker arm (7) and the floater (5) swing upwards, and when the contact point of the floater (5) and the cam (4) is the highest point of the cam (4), the swing angle of the rocker arm (7) and the floater (5) is the largest, at the moment, the rocker arm (7) and the floater (5) reach the highest point, and the spring (8) is in a stretching state; when the cam (4) continues to rotate, the spring (8) can pull the rocker arm (7) and the floater (5) downwards, so that the rocker arm (7) and the floater (5) are always in contact with the cam (4), and the rocker arm (7) and the floater (5) swing downwards;

step three: the piston rod (11) in the hydraulic cylinder realizes stretching and compressing motions through the up-and-down swinging of the rocker arm (7) and the floater (5), when the rocker arm (7) and the floater (5) move downwards, the piston rod (11) stretches downwards, the upper chamber of the hydraulic cylinder realizes an oil absorption process through the oil tank (26), the lower chamber discharges oil, hydraulic oil realizes the rotary motion of the hydraulic motor (30) through the transmission of a hydraulic system, when the rocker arm (7) and the floater (5) move upwards, the piston rod (11) compresses upwards, the lower chamber realizes the oil absorption process through the oil tank (26), the upper chamber discharges oil, and the hydraulic oil realizes the rotary motion of the hydraulic motor (30) through the transmission of the hydraulic system;

step four: the direct current generator (31) is driven to work through the rotary motion of the hydraulic motor (30); electricity generated by the direct current generator (31) passes through the filter capacitor (35), the current-limiting resistor (36) and the voltage-stabilizing tube (37) in sequence to generate required stable voltage and current; the current limiting resistor (36) adopts a slide rheostat, and the resistance value of the current limiting resistor is adjusted to be suitable for the electricity generated by the cams (4) with different sizes and the rotating speed thereof; whether the light-emitting diode (38) is on or not can be seen, and then the storage battery (40) is charged more stably through the charging controller (39), wherein the charging controller (39) mainly protects the storage battery (40) and prevents overcharge.

Technical Field

The invention belongs to the field of ocean clean energy development and utilization, and particularly relates to an experimental platform and method for an oscillating flapping wing wave energy power generation device.

Background

Some ocean monitoring equipment needs to work in the sea for a long time, so that the requirement on the power-on time of power supply equipment is high, the power-on time is limited by the power-on capacity of a general battery, and the power-on time needs to be replaced manually for many times. Some offshore devices, such as electric fishing boats, have troublesome charging and replacement of batteries. Tidal current in the ocean is abundant, and if the tidal current can be developed and utilized, the significance of continuously supplementing the energy of ocean equipment is great. The conventional equipment for offshore and in-sea operations needs to be supplemented or replaced manually after a period of time, so that the efficiency and continuity of the equipment operation are affected.

Disclosure of Invention

The invention aims to provide an experimental platform and a method for an oscillating flapping wing wave energy power generation device, and the experimental platform realizes the generation of wave energy in different levels under the condition of simulating no water pool in a laboratory.

In order to achieve the technical features, the invention is realized as follows: an experimental platform of an oscillating flapping wing wave energy power generation device comprises a fixed platform, a fixed platform and a movable platform, wherein the fixed platform is used for carrying and supporting the whole device; the fixed platform is provided with an oscillating flapping wing collecting mechanism for collecting energy; the oscillating flapping wing collecting mechanism is connected with a bridge type hydraulic conversion system, and the bridge type hydraulic conversion system is connected with a direct current electric energy conversion and energy storage system.

The fixed platform comprises a first platform, a spring fixed platform is fixedly mounted on one side of the top of the first platform, a rocker arm fixed platform is fixed on the top of the spring fixed platform, a cylinder barrel fixed platform is fixed on the top of the rocker arm fixed platform, and a second platform is arranged on one side of the first platform, which is located on the spring fixed platform.

The spring fixing platform, the rocker arm fixing platform and the cylinder barrel fixing platform are sequentially welded and fixed on the stand columns which are fixedly arranged in a triangular mode, the lower portions of the stand columns are fixed on the first platform, and the large rib plates are welded between the spring fixing platform and the stand columns.

The oscillating flapping wing collecting mechanism comprises a coaxial speed reducing motor, the coaxial speed reducing motor is fixedly installed on a first platform of a fixed platform, an output shaft of the coaxial speed reducing motor is provided with a cam, the cam is matched with the bottom end of a floater to form a cam, the top end of the floater is fixedly provided with a rocker arm through a floater connecting piece, the other end of the rocker arm is fixedly provided with a rocker arm connecting piece, the other end of the rocker arm connecting piece is hinged to a first bearing seat through a stepped shaft, and the first bearing seat is fixed on the outer side wall of the rocker arm fixed platform of the fixed platform; the cylinder barrel is characterized in that piston rod supporting pieces are symmetrically fixed to the top of the rocker arm, the piston rod supporting pieces are hinged to the tail ends of piston rods of the cylinder barrel through hinge pins, a cylinder barrel connecting piece is welded on the cylinder barrel, the cylinder barrel connecting piece is hinged to a second bearing seat, the second bearing seat is fixed to a bearing base, and the bearing base is fixed to the outer side wall of a cylinder barrel fixing platform of the fixing platform.

The cams have various sizes and models, and the motion amplitude of the floater and the rocker arm is changed by replacing the cams with different models; the coaxial speed reducing motor is connected with a frequency converter fixed on the first platform, controls the rotating speed, and realizes the change of the motion period of the cam, thereby changing the up-and-down swing period of the floater and the rocker arm.

The bottom end of the rocker arm is connected with a spring, and the other end of the spring is hooked on the outer side wall of a spring fixing platform of the fixing platform; and a small rib plate is fixed between the bearing base and the cylinder barrel fixing platform.

The bridge type hydraulic conversion system consists of a hydraulic cylinder, a one-way valve, a safety valve, an energy accumulator, a pressure gauge, a hydraulic motor, an oil tank and a hydraulic pipeline; the hydraulic cylinder is connected with the one-way valve through a hose, the safety valve is installed on a vertical panel, the energy accumulator is installed on an energy accumulator base, the energy accumulator base is installed on the vertical panel, the hydraulic motor and the direct-current generator are installed on a direct-current generator base, and the direct-current generator base is placed on a second platform of the fixed platform; the vertical panel is vertically fixed on the second platform; the bridge type hydraulic conversion system main road is provided with a safety valve, an energy accumulator and a pressure gauge, the rear part of the bridge type hydraulic conversion system main road is connected with a hydraulic motor, an oil outlet of the hydraulic motor is connected with an oil tank, and the hydraulic motor rotates to drive a direct current generator to work and generate electricity.

The four check valves and the hydraulic pipeline form a bridge type hydraulic loop to realize hydraulic conversion; the hydraulic cylinder is composed of a piston rod and a cylinder barrel.

The direct current electric energy conversion and energy storage system consists of a direct current generator, a filter capacitor, a current-limiting resistor, a voltage-stabilizing tube, a light-emitting diode, a charging controller and a storage battery; the electricity generated by the direct current generator generates required stable voltage and current through the filter capacitor, the current-limiting resistor and the voltage-stabilizing tube; the current limiting resistor adopts a slide rheostat, and the resistance value of the current limiting resistor is adjusted to be suitable for the electricity generated by the cams with different sizes and the rotating speeds of the cams; the direct current electric energy conversion energy storage system is also provided with a light emitting diode and a charging controller, and the rear part of the charging controller is connected with a storage battery.

The method for carrying out the power generation experiment by adopting the experimental platform of the oscillating flapping wing wave energy power generation device comprises the following steps:

the method comprises the following steps: according to experimental setting, a cam with a proper size is selected to realize the change of the motion amplitude of the rocker float; the change of the motion period of the cam can be realized by adjusting the rotating speed of the coaxial speed reducing motor;

step two: starting a coaxial speed reducing motor, controlling the rotating speed of the coaxial speed reducing motor through a frequency converter, driving a cam to rotate by the rotation of the coaxial speed reducing motor, and driving a rocker arm and a floater to swing up and down by the rotation of the cam; when the cam moves from the lowest point to the highest point, the rocker arm and the floater swing upwards, and when the contact point of the floater and the cam is the highest point of the cam, the swinging angle of the rocker arm and the floater is the largest, at the moment, the rocker arm and the floater reach the highest point, and the spring is in a stretching state; when the cam continues to rotate, the spring can pull the rocker arm and the floater downwards, so that the rocker arm and the floater are always in contact with the cam, and the rocker arm and the floater swing downwards;

step three: the piston rod in the hydraulic cylinder realizes stretching and compressing motions through the up-and-down swinging of the rocker arm and the floater, when the rocker arm and the floater move downwards, the piston rod stretches downwards, the upper chamber of the hydraulic cylinder realizes an oil absorption process through an oil tank, the lower chamber discharges oil, hydraulic oil realizes the rotary motion of the hydraulic motor through the transmission of a hydraulic system, when the rocker arm and the floater move upwards, the piston rod compresses upwards, the lower chamber realizes the oil absorption process through the oil tank, the upper chamber discharges oil, and the hydraulic oil realizes the rotary motion of the hydraulic motor through the transmission of the hydraulic system;

step four: the direct current generator is driven to work through the rotating motion of the hydraulic motor; the electricity generated by the direct current generator passes through the filter capacitor, the current-limiting resistor and the voltage-stabilizing tube in sequence to generate required stable voltage and current; the current limiting resistor adopts a slide rheostat, and the resistance value of the current limiting resistor is adjusted to be suitable for the electricity generated by the cams with different sizes and the rotating speeds of the cams; whether the light-emitting diode is on or not can be seen, and then the storage battery is charged more stably through the charge controller, wherein the charge controller mainly protects the storage battery and prevents overcharge.

The invention has the following beneficial effects:

1. according to the experimental platform of the oscillating flapping wing wave energy power generation device, the rotating speed of the cam can be changed by controlling the coaxial speed reducing motor through the frequency converter, the change of the motion period of the cam is realized, the size of the cam is changed, and the change of the motion amplitude of the rocker float can be realized, so that the wave motion of different levels can be simulated.

2. The invention simulates pool-free wave energy power generation in a laboratory, can realize downward movement of the rocker float and can greatly reduce the weight of the rocker float by arranging the spring.

3. According to the invention, the rocker float swings up and down to drive the piston rod to move up and down to squeeze hydraulic oil, and the hydraulic oil passes through the bridge type hydraulic conversion system to rotate the hydraulic motor.

4. The hydraulic motor drives the direct current generator to work, and electricity generated by the direct current generator is converted into required electricity through the direct current electric energy conversion and the energy storage system to charge the storage battery.

5. The device realizes the wave energy power generation of different levels under the condition of simulating no water pool in a laboratory.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 is a three-dimensional diagram of an experimental platform of an oscillating flapping wing wave energy power generation device.

Fig. 2 is a schematic diagram of a bridge type hydraulic conversion system of an experimental platform of an oscillating flapping wing wave energy power generation device.

Fig. 3 is a schematic diagram of a direct current electric energy conversion and energy storage system of an experimental platform of an oscillating flapping wing wave energy power generation device.

In the figure: 1-a first platform, 2-a frequency converter, 3-a coaxial gear motor, 4-a cam, 5-a floater, 6-a floater connecting piece, 7-a rocker arm, 8-a spring, 9-a piston rod supporting piece, 10-a pin shaft, 11-a piston rod, 12-a cylinder barrel, 13-a cylinder barrel connecting piece, 14-a second bearing seat, 15-a bearing base, 16-a small rib plate, 17-a cylinder barrel fixing platform, 18-an upright post, 19-a rocker arm fixing platform, 20-a rocker arm connecting piece, 21-a stepped shaft, 22-a first bearing seat, 23-a large rib plate, 24-a spring fixing platform, 25-a one-way valve, 26-an oil tank, 27-a safety valve, 28-an energy accumulator base, 29-an energy accumulator and 30-a hydraulic motor, 31-a direct current generator, 32-a direct current generator base, 33-a second platform, 34-a pressure gauge, 35-a filter capacitor, 36-a current-limiting resistor, 37-a voltage-stabilizing tube, 38-a light-emitting diode, 39-a charging controller and 40-a storage battery.

Detailed Description

Embodiments of the present invention will be further described with reference to the accompanying drawings.

Example 1:

referring to fig. 1, an experimental platform of an oscillating flapping wing wave energy power generation device comprises a fixed platform for carrying and supporting the whole device; the fixed platform is provided with an oscillating flapping wing collecting mechanism for collecting energy; the oscillating flapping wing collecting mechanism is connected with a bridge type hydraulic conversion system, and the bridge type hydraulic conversion system is connected with a direct current electric energy conversion and energy storage system. By adopting the experimental platform, the wave energy power generation of different levels under the condition of no water pool can be simulated in a laboratory. In a specific experiment process, the oscillating flapping wing collecting mechanism is used for simulating the collecting process of wave energy, the collected wave energy is converted into electric energy through the bridge type hydraulic conversion system, and the converted electric energy is stored and used through the direct current electric energy conversion and energy storage system.

Further, the fixed platform comprises a first platform 1, a spring fixed platform 24 is fixedly mounted on one side of the top of the first platform 1, a rocker arm fixed platform 19 is fixed on the top of the spring fixed platform 24, a cylinder barrel fixed platform 17 is fixed on the top of the rocker arm fixed platform 19, and a second platform 33 is arranged on one side of the first platform 1, which is located on the spring fixed platform 24. The fixing platform is used for supporting and fixing different components of the whole experiment device, and further normal proceeding of follow-up experiments is guaranteed.

Further, the spring fixing platform 24, the rocker arm fixing platform 19 and the cylinder barrel fixing platform 17 are sequentially welded and fixed on the upright posts 18 which are fixedly arranged in a triangular shape, the lower portions of the upright posts 18 are fixed on the first platform 1, and large rib plates 23 are welded between the spring fixing platform 24 and the upright posts 18. The structural stability is ensured by the triangular arrangement of the uprights 18 described above, and the structural strength of the entire fixed platform is also ensured. The connection strength of the spring fixing platform 24 is enhanced through the large rib plate 23.

Further, the oscillating flapping wing collecting mechanism comprises a coaxial speed reducing motor 3, the coaxial speed reducing motor 3 is fixedly installed on a first platform 1 of a fixed platform, an output shaft of the coaxial speed reducing motor 3 is provided with a cam 4, the cam 4 and the bottom end of a floater 5 form cam fit, the top end of the floater 5 is fixedly provided with a rocker arm 7 through a floater connecting piece 6, the other end of the rocker arm 7 is fixedly provided with a rocker arm connecting piece 20, the other end of the rocker arm connecting piece 20 is hinged to a first bearing seat 22 through a stepped shaft 21, and the first bearing seat 22 is fixed on the outer side wall of a rocker arm fixed platform 19 of the fixed platform; the top of the rocker arm 7 is symmetrically fixed with piston rod supporting pieces 9, the piston rod supporting pieces 9 are hinged and connected with the tail ends of piston rods 11 of cylinder barrels 12 through pin shafts 10, the cylinder barrels 12 are welded with cylinder barrel connecting pieces 13, the cylinder barrel connecting pieces 13 are hinged on second bearing seats 14, the second bearing seats 14 are fixed on bearing bases 15, and the bearing bases 15 are fixed on the outer side walls of cylinder barrel fixing platforms 17 of the fixing platforms. The oscillating flapping wing collecting mechanism is mainly used for simulating the collecting process of wave energy. In the working process, the coaxial reducing motor 3 is started, the rotating speed of the coaxial reducing motor 3 is controlled through the frequency converter 2, the coaxial reducing motor 3 rotates to drive the cam 4 to rotate, and the cam 4 rotates to drive the rocker arm 7 and the floater 5 to swing up and down. When the cam 4 moves from the lowest point to the highest point, the rocker arm 7 and the floater 5 swing upwards, and when the contact point of the floater 5 and the cam 4 is the highest point of the cam 4, the swing angle of the rocker arm 7 and the floater 5 is the largest, at the moment, the rocker arm 7 and the floater 5 reach the highest point, and the spring 8 is in a stretching state; when the cam 4 continues to rotate, the spring 8 pulls the rocker arm 7 and the float 5 downwards, so that the rocker arm 7 and the float 5 are always in contact with the cam 4, and the rocker arm 7 and the float 5 swing downwards.

Furthermore, the cam 4 has various sizes and models, and the change of the motion amplitude of the floater 5 and the rocker arm 7 is realized by replacing the cam 4 with different models; the coaxial speed reducing motor 3 is connected with the frequency converter 2 fixed on the first platform 1, controls the rotating speed, and realizes the change of the motion period of the cam 4, thereby changing the up-and-down swing period of the floater 5 and the rocker arm 7.

Further, the bottom end of the rocker arm 7 is connected with a spring 8, and the other end of the spring 8 is hooked on the outer side wall of a spring fixing platform 24 of the fixing platform; and a small rib plate 16 is fixed between the bearing base 15 and the cylinder barrel fixing platform 17.

The reason why the spring 8 is adopted is that in the actual wave energy power generation device, in order to realize the downward movement of the floater 5, the weight of the floater 5 of the rocker arm 7 is relatively large, and the spring 8 is arranged to simulate the pool-free wave energy power generation in a laboratory, so that the downward movement of the floater 5 of the rocker arm 7 can be realized, and the weight of the floater 5 of the rocker arm 7 can be greatly reduced.

Furthermore, when the cam in the oscillating flapping wing collecting mechanism is a small cam, and the rocker float is at the lowest point of oscillation, the spring is in the original length state; when the cam is a large cam, when the rocker float is at the highest point of oscillation, the spring is stretched the longest. The spring 8 is arranged to solve the problem that when the cam pushes the floater to reach the highest point, the gravity of the floater is smaller than the hydraulic oil pressure of the hydraulic cylinder, the rocker arm floater is separated from the cam by the dead weight of the floater, and the cam idles. A spring is arranged to pull the float to be always in contact with the cam, so that the float generates regular sinusoidal motion. Different levels of wave motion can be simulated by replacing cams with different sizes and changing the rotating speed of the cams.

Example 2

Referring to fig. 2, the bridge type hydraulic conversion system is composed of a hydraulic cylinder, a one-way valve 25, a safety valve 27, an accumulator 29, a pressure gauge 34, a hydraulic motor 30, an oil tank 26 and a hydraulic pipeline; the hydraulic cylinder is connected with the check valve 25 through a hose, the safety valve 27 is installed on a vertical panel, the energy accumulator 29 is installed on an energy accumulator base 28, the energy accumulator base 28 is installed on the vertical panel, the hydraulic motor 30 and the direct current generator 31 are installed on a direct current generator base 32, and the direct current generator base 32 is placed on a second platform 33 of the fixed platform; the vertical panel is vertically fixed on the second platform 33; the main road of the bridge type hydraulic conversion system is provided with a safety valve 27, an energy accumulator 29 and a pressure gauge 34, the rear part of the main road is connected with a hydraulic motor 30, the oil outlet of the hydraulic motor 30 is connected with an oil tank 26, and the hydraulic motor 30 rotates to drive a direct current generator 31 to work and generate electricity. The bridge type hydraulic conversion system is mainly used for converting wave energy into electric energy. In the specific working process, the piston rod 11 in the hydraulic cylinder realizes stretching and compressing motion through the up-and-down swinging of the rocker arm 7 floater 5, when the rocker arm 7 floater 5 moves downwards, the piston rod 11 stretches downwards, the upper chamber of the hydraulic cylinder realizes the oil absorption process through the oil tank 26, the lower chamber produces oil, and the hydraulic oil realizes the rotary motion of the hydraulic motor 30 through the transmission of a hydraulic system. When the rocker arm 7 moves upwards, the piston rod 11 compresses upwards, the lower chamber can suck oil through the oil tank 26, the upper chamber is drained, and the hydraulic motor 30 rotates through the transmission of hydraulic oil through a hydraulic system.

Furthermore, the four check valves 25 and the hydraulic pipeline form a bridge type hydraulic circuit to realize hydraulic conversion; the hydraulic cylinder is composed of a piston rod 11 and a cylinder tube 12.

Example 3:

referring to fig. 3, the dc power conversion and energy storage system is composed of a dc generator 31, a filter capacitor 35, a current limiting resistor 36, a voltage regulator tube 37, a light emitting diode 38, a charge controller 39 and a storage battery 40; the electricity generated by the dc generator 31 passes through the filter capacitor 35, the current limiting resistor 36 and the voltage regulator tube 37 to generate the required stable voltage and current; the current limiting resistor 36 adopts a slide rheostat, and the resistance value of the current limiting resistor is adjusted to be suitable for electricity generated by the cams 4 with different sizes and the rotating speed of the cams; the direct current electric energy conversion energy storage system is also provided with a light emitting diode 38 and a charging controller 39, and a storage battery 40 is connected behind the charging controller 39. The direct current electric energy conversion and energy storage system is mainly used for storing the converted electric energy.

Example 4:

the method for carrying out the power generation experiment by adopting the experimental platform of the oscillating flapping wing wave energy power generation device comprises the following steps:

the method comprises the following steps: according to experimental setting, the change of the motion amplitude of the rocker arm 7 and the floater 5 is realized by selecting the cam 4 with a proper size; the change of the motion period of the cam 4 can be realized by adjusting the rotating speed of the coaxial reducing motor 3;

step two: starting the coaxial reducing motor 3, controlling the rotating speed of the coaxial reducing motor 3 through the frequency converter 2, rotating the coaxial reducing motor 3 to drive the cam 4 to rotate, and rotating the cam 4 to drive the rocker arm 7 and the floater 5 to swing up and down; when the cam 4 moves from the lowest point to the highest point, the rocker arm 7 and the floater 5 swing upwards, and when the contact point of the floater 5 and the cam 4 is the highest point of the cam 4, the swing angle of the rocker arm 7 and the floater 5 is the largest, at the moment, the rocker arm 7 and the floater 5 reach the highest point, and the spring 8 is in a stretching state; when the cam 4 continues to rotate, the spring 8 can pull the rocker arm 7 and the floater 5 downwards, so that the rocker arm 7 and the floater 5 are always in contact with the cam 4, and the rocker arm 7 and the floater 5 swing downwards;

step three: the piston rod 11 in the hydraulic cylinder realizes stretching and compressing motions through the up-and-down swinging of the rocker arm 7 and the floater 5, when the rocker arm 7 and the floater 5 move downwards, the piston rod 11 stretches downwards, the upper chamber of the hydraulic cylinder realizes an oil absorption process through the oil tank 26, oil is discharged from the lower chamber, hydraulic oil realizes the rotating motion of the hydraulic motor 30 through the transmission of a hydraulic system, when the rocker arm 7 and the floater 5 move upwards, the piston rod 11 compresses upwards, the lower chamber realizes the oil absorption process through the oil tank 26, oil is discharged from the upper chamber, and the hydraulic oil realizes the rotating motion of the hydraulic motor 30 through the transmission of the hydraulic system;

step four: the direct current generator 31 is driven to work through the rotation of the hydraulic motor 30; the electricity generated by the direct current generator 31 passes through the filter capacitor 35, the current-limiting resistor 36 and the voltage-stabilizing tube 37 in sequence to generate the required stable voltage and current; the current limiting resistor 36 adopts a slide rheostat, and the resistance value of the current limiting resistor is adjusted to be suitable for electricity generated by the cams 4 with different sizes and the rotating speed of the cams; whether the light emitting diode 38 is on or not can be seen to see whether there is electricity, and then the storage battery 40 is charged more stably through the charge controller 39, wherein the charge controller 39 mainly protects the storage battery 40 from overcharge.